Assisted Human Reproduction is undoubtedly an area with ethical and moral implications. There are common issues that arise with the generation of new embryos when a couple undergoes ART and with transfers of previously frozen embryos. Some of the most frequent issues are: embryo manipulation and genetic diagnosis; the use of donor gametes and the possible coexistence of their legal children with the biological ones in the future; the option of discarding embryos by parents for no other purpose when they don’t wish to donate them to other couples with reproductive problems or for research purposes; the age of women accessing ART, along with a long list of legal, ethical and moral issues pertinent to each assisted reproduction centre. Continue Reading »
This is not science fiction, it’s reality. It is reproductive medicine and advanced genetics together to achieve healthy children who are free of diseases. Before, medicine focused on a person’s health. Now thanks to genetics and scientific research we are able to go one step further and take care of the embryo. Continue Reading »
It is estimated that about 20% of reproductive problems are genetic or chromosomal type. That is why today genetic testing is an essential part of the fertility study in couples who come to our clinic looking for descendants.
For the diagnosis of fertility problems there is a set of genetic studies very useful in the assistance of couples with reproductive desire. Tests such as the karyotype in both partners, microdeletion of the Y chromosome in the male or the molecular study of fragile X syndrome in women are usually required tests to determine a possible genetic basis of fertility problems in couples. Continue Reading »
Currently, oocyte donation is probably the most demanded technique in fertility centers, mainly due to the increase of maternal age. Voluntary participation of donors is essential, but donors must be evaluated carefully in order to avoid unsatisfactory results (do not forget that the ultimate goal is the birth of a healthy child without prejudice to the donor or the recipient couple).
In a recent study carried out in our center and presented at the Congress of the British Fertility Society, the leading causes of rejection in our program were evaluated in 560 potential egg donors. Continue Reading »
Genetic Amniocentesis is a prenatal diagnostic technique aimed at obtaining fetal karyotype. The karyotype is the number of chromosomes that are endowed with all people. Normal people we have 46 chromosomes distributed in 23 pairs (22 pairs of chromosomes called autosomes and 1 pair of sex chromosomes, XX or XY, which determine the sex of the fetus). Down syndrome or trisomy 21 is the most common chromosomal abnormality in new born infants; in this case, the individual has 47 chromosomes, and the alteration is that there are 3 21 chromosomes rather than two. Continue Reading »
Today, in In Vitro Fertilization treatments, it is not extraordinary to find ourselves on the day of embryo transfer with a high number of good quality embryos. For a fresh transfer we shall be electing the embryo or embryos that morphologically and kinetically demonstrate greater development and ‘the other’ good quality ones can be cryopreserved. Continue Reading »
From fertilization and until the embryo transfer takes place in the womb, embryos follow a development that is valued by embryologists daily. Those embryos that have kept a correct evolution and are in better condition are selected to be transferred. Continue Reading »
Before establishing the biological origin differences between identical and fraternal twins, let’s make a quick note on the etymology of both words.
Etymologically both terms have the same origin (Latin gemellicium) and were used interchangeably to refer to children born in the same delivery. The only difference was the use of the term fraternal twin in the popular speech twin and identical twin in the cultivated speech. However, the semantic evolution of both words has been accompanied by the numerous advances in the field of genetics and knowledge of the development of the human embryo. In fact, since they differ in the latest edition of the dictionary of the RAE: Continue Reading »
There are times when we give patients the results of in vitro fertilization, we tell them that the test is positive but that it is not good news, and that the chances that it evolves into an ongoing pregnancy are slim. It is a very difficult situation, emotionally, since it is very hard for patients to understand what has happened. If it really is positive, then why isn’t that good news? If it’s not good news, then why do I still have to take medication? Continue Reading »
Couples that don’t achieve pregnancy after in vitro fertilization treatments and those who lose their pregnancy in early stages require a multidisciplinary approach in order to diagnose and treat their reproductive problem.
From a genetic point of view, these patients are more likely to produce embryos with chromosomal abnormalities. To improve these couples’ pregnancy rates, the preimplantational genetic diagnosis (PGD)can be applied. In these cases, the goal is to select the embryos with the highest capacity of resulting in an ongoing pregnancy thanks to the fact that the PGD allows us to identify the number of chromosomes in the embryo. Only embryos with the correct number of chromosomes can lead to a healthy child, others will arrest in their development or will lead to a miscarriage. Continue Reading »
The information that we can offer online does not replace the direct professional opinion of the doctor after a comprehensive assessment of your personal case and medical history. Therefore, we encourage your to request an appointment with our medical team either in person or through an online video conference if you are unable to travel to one of our clinics in Alicante, Elche, Cartagena or Benidorm.